What is effect of harmonic current (Draw by VFD) on power
system/ electrical Equipments ?
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in science exhibition how lamp can blink when you clap near the lamp ? thank you
What is online and offline ups? how does it works?
the cheapest inducting instrument among all is a)pmmc b)moving iron c)electrodynamometer d)rectifier
How much current does a motor take in no load condition?
how the magnetic flux is said to be rotating & alternating?
What is battery Amphere-hour? How the battery back up time period is calculated?
What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?
what is the dedicated neutral earth in ups? y its required?
In LT Line What is the minimum clearance required between phase to phase busbar & between Phase to body of the panel? Also between Neutral &phase, & Neutral & body of panel. as per standards.
what is the difference between ground, earth and neutral?????????....
sir, plz tell me how much kvar capacitor required for 1000 amp or 500 Kw load ? what is the formula ?
what are fluorescent lamps (fluorescent fixtures) & what are incandescen lamps (incandescents fixtures) ? differences between these two ?